CN209759487U - Air supply system adopting blast furnace blower for hot air dehumidification - Google Patents
Air supply system adopting blast furnace blower for hot air dehumidification Download PDFInfo
- Publication number
- CN209759487U CN209759487U CN201920271933.2U CN201920271933U CN209759487U CN 209759487 U CN209759487 U CN 209759487U CN 201920271933 U CN201920271933 U CN 201920271933U CN 209759487 U CN209759487 U CN 209759487U
- Authority
- CN
- China
- Prior art keywords
- hot
- air
- heat exchanger
- blast
- blast furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to an adopt air feed system of hot-blast dehumidification of blast furnace air-blower, include the air-blower of being connected through hot-blast main and hot-blast furnace, arrange the dehumidifier on air-blower air suction pipe and through the cold water pipeline with hot water type lithium bromide unit that the dehumidifier is connected, the last first heat exchanger that has arranged of hot-blast main, the cold medium export of first heat exchanger with hot water type lithium bromide unit's heat medium water inlet pipe intercommunication, the cold medium entry of first heat exchanger with the heat medium water outlet pipe intercommunication of hot water type lithium bromide unit. The first heat exchanger is arranged on the hot air pipeline to recover the waste heat of blast of the air blower and heat the heat medium water of the lithium bromide unit, so that the outlet air temperature of the hot air furnace can be increased, the coke ratio is reduced, the steel yield is increased, the energy is saved, the problem that a large amount of electric power or steam resources are required to be consumed in blast dehumidification of the blast furnace in the prior art is solved, the energy is effectively saved, and the production cost of the blast furnace is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of blast furnace production, concretely relates to adopt hot-blast dehumidification's of blast furnace air-blower air feed system.
Background
The blast furnace hot blast stove is used for heating blast air to a required temperature so as to improve the benefit and efficiency of the blast furnace, reduce the coke ratio, increase the steel yield and save energy. The hot blast stove works according to the heat storage principle: the gas is burnt in the combustion chamber, the high-temperature waste gas passes through the checker bricks and enables the checker bricks to store heat, after the checker bricks are fully heated, the blower supplies air into the hot air furnace, and the cold air is heated and sent out through the checker bricks. The blast furnace is generally provided with two or more than two hot blast stoves, and an alternative air supply mode is adopted, namely when one hot blast stove supplies air, other hot blast stoves are burnt, so that the blast furnace is ensured to supply air continuously.
How to increase the hot air temperature at the outlet of the hot air furnace is the main research direction of the hot air furnace, and the common methods are to mix and burn high-heat value fuel gas, increase the heat exchange area of checker bricks of the hot air furnace, change the material and density of the checker bricks, change the shape of a heat accumulator, preheat coal gas and combustion-supporting air, and the like. Both of these methods will increase the production cost accordingly.
The dehumidifying blast of the blast furnace has obvious effects on the aspects of stable yield of the blast furnace, coke ratio reduction and power consumption reduction of the blast furnace, and particularly in the provinces of great rivers and lakes in the summer with hot weather and high humidity, and the dehumidifying blast is necessary to reduce the humidity and stabilize the condition of the blast furnace. Conventional blast furnace dehumidification blowing techniques require a large amount of electricity or steam and therefore face a great energy consumption and cost pressure.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an adopt hot-blast dehumidification of blast furnace air-blower air feed system, can solve prior art's partial defect at least.
The embodiment of the utility model relates to an adopt air feed system of hot-blast dehumidification of blast furnace air-blower, include the air-blower of being connected through hot-blast main and hot-blast furnace, arrange the dehumidifier on air-blower air suction pipe and through the cold water pipeline with hot water type lithium bromide unit that the dehumidifier is connected, the last first heat exchanger that has arranged of hot-blast main, the cold medium export of first heat exchanger with hot water type lithium bromide unit's hot medium water inlet pipe intercommunication, the cold medium entry of first heat exchanger with the hot water type lithium bromide unit's hot medium water outlet pipe intercommunication.
In one embodiment, the heat medium water inlet pipe and the heat medium water outlet pipe are provided with first control valves.
As one embodiment, a heating water inlet pipe is connected to the heating medium water inlet pipe in a bypassing manner, a heating water return pipe is connected to the heating medium water outlet pipe in a bypassing manner, a bypass point of the heating water inlet pipe and a bypass point of the heating water outlet pipe are respectively located between the first heat exchanger and the first control valve on the corresponding pipeline, and the heating water inlet pipe and the heating water outlet pipe are both connected with a heating user and are both provided with second control valves.
In one embodiment, the hot air pipeline is further provided with a second heat exchanger, the second heat exchanger is located between the first heat exchanger and the hot air furnace, and the second heat exchanger is connected with a cooling medium pipeline.
In one embodiment, an air filter is arranged on the air inlet side of the dehumidifier.
As one of the embodiments, the hot water type lithium bromide unit is provided with a cooling tower.
The embodiment of the utility model provides a following beneficial effect has at least:
The utility model provides an adopt air feed system of the hot-blast dehumidification of blast furnace air-blower through arranging first heat exchanger on hot-air pipes with recovery air-blower blast waste heat and heating lithium bromide unit heat medium water, can improve the export wind-warm syndrome of hot-blast furnace to reduce the coke rate, increase steel output, the energy saving has solved the problem that blast furnace blast dehumidification needs to consume a large amount of electric power or steam resources among the prior art simultaneously, the energy saving greatly reduces blast furnace manufacturing cost effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an air supply system using hot air dehumidification of a blast furnace blower according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Generally, increasing the temperature of the air at the outlet of the blower 1 is beneficial to increasing the temperature of the air at the outlet of the hot blast stove 4. However, the applicant found that: in actual production, the outlet air temperature of the hot blast stove 4 can be improved by properly reducing the outlet air temperature of the air blower 1, because the outlet air temperature of the air blower 1 is reduced, the heating time required by the outlet air temperature of the air blower 1 to reach the preset temperature is prolonged, the burning time of the hot blast stove 4 in a burning state is correspondingly prolonged, the heat storage capacity of the hot blast stove 4 is more, and the outlet hot air temperature of the hot blast stove 4 can be correspondingly improved. Therefore, the reduction of the air temperature at the outlet of the air blower 1 can reduce the checker brick amount of the hot blast stove 4, reduce the initial investment of the hot blast stove 4 system, and reduce the initial investment of the cold air pipeline system. For example, in the axial flow fan 1 having an outlet air temperature of 200 ℃ or higher, it is advantageous to reduce the blowing temperature of the fan 1 (i.e., the inlet air temperature of the hot air furnace 4) to 150 ℃ or lower, for example, to reduce the coke ratio and increase the steel production.
Based on the technical scheme that the blast temperature of the blower 1 needs to be reduced, and because a large amount of energy needs to be consumed in the existing blast furnace dehumidification blasting technology, in the embodiment, the dehumidification operation is performed by using the hot blast waste heat of the blast furnace blower 1. Specifically, the method comprises the following steps:
As fig. 1, the embodiment of the utility model provides an adopt air feed system of hot-blast dehumidification of blast furnace air-blower, include through air-blower 1 that hot-blast furnace and 4 are connected, arrange dehumidifier 6 on air-blower 1 suction pipe and through the cold water pipeline with hot water type lithium bromide unit 7 that dehumidifier 6 is connected, first heat exchanger 2 has been arranged on the hot-blast furnace, the cold medium export of first heat exchanger 2 with hot water type lithium bromide unit 7's heat medium water inlet pipe intercommunication, the cold medium entry of first heat exchanger 2 with hot water type lithium bromide unit 7's heat medium water outlet pipe intercommunication.
The dehumidifier 6 and the hot water type lithium bromide unit 7 are conventional devices in the art, and the detailed structure thereof is not described herein.
The first heat exchanger 2 can adopt a conventional heat exchanger, and is preferably an indirect heat exchanger to realize heat exchange between hot air at the outlet of the air blower 1 and the heat medium water of the lithium bromide unit 7; in one embodiment, in the first heat exchanger 2, hot air at the outlet of the blower 1 flows through the shell side, and hot water in the lithium bromide unit 7 flows through the tube side. The low-temperature heat medium water backwater is heated by the first heat exchanger 2 and then becomes high-temperature heat medium water and enters the hot water type lithium bromide unit 7, the cold medium water prepared by the lithium bromide unit 7 enters the dehumidifier 6 to cool the high-temperature wet air, so that the high-temperature wet air is cooled to remove water, the cold medium water after absorbing heat flows back to the lithium bromide unit 7, and the process is circulated.
Further, as shown in fig. 1, the hot water type lithium bromide unit 7 is configured with a cooling tower 8, and the cooling water of the hot water type lithium bromide unit 7 circulates through the cooling tower 8, which is a conventional configuration in the art, and the detailed structure is not described herein.
Further, as shown in fig. 1, an air filter 5 is arranged on the air inlet side of the dehumidifier 6, so that the cleanliness of high-temperature humid air is improved, and the service life and the use effect of the dehumidifier 6, the blower 1 and the like are improved.
The air supply system adopting the hot air dehumidification of the blast furnace blower provided by the embodiment can improve the outlet air temperature of the hot air furnace 4 by arranging the first heat exchanger 2 on the hot air pipeline to recover the waste heat of the air blast of the blower 1 and heat the heat medium water of the lithium bromide unit 7, thereby reducing the coke ratio, increasing the steel yield, saving energy, solving the problem that a large amount of electric power or steam resources are required to be consumed for the blast furnace blower dehumidification in the prior art, effectively saving energy, and remarkably reducing the production cost of the blast furnace.
The structure of the air supply system is further optimized, as shown in fig. 1, a second heat exchanger 3 is further arranged on the hot air pipeline, the second heat exchanger 3 is located between the first heat exchanger 2 and the hot air furnace 4, and the second heat exchanger 3 is connected with a cooling medium pipeline. The second heat exchanger 3 can be used as an emergency standby device to prevent the air temperature at the outlet of the first heat exchanger 2 from being too high, and the second heat exchanger 3 can adopt conventional cooling media such as circulating cooling water, for example, the cooling water media pipeline is connected with a circulating cooling water source. Further, a control valve may be provided on the cooling medium line to control whether the second heat exchanger 3 is put into operation; temperature measuring equipment can be arranged on a blast pipeline between the second heat exchanger 3 and the hot blast stove 4 or at an air inlet of the hot blast stove 4 to detect the inlet air temperature of the hot blast stove 4, so as to guide whether the second heat exchanger 3 is put into operation, the flow rate of circulating cooling water required by the second heat exchanger 3 and the like.
Further optimizing the structure of the air supply system, as shown in fig. 1, the first control valves 9 are respectively arranged on the hot water inlet pipe and the hot water outlet pipe, so that the circulation flow of the hot water can be controlled, and whether the lithium bromide unit 7 and the dehumidifier 6 are operated or not can be controlled. Further preferably, as shown in fig. 1, a heating water inlet pipe is connected to the heating medium water inlet pipe in a side-by-side manner, a heating water return pipe is connected to the heating medium water outlet pipe in a side-by-side manner, a heating water inlet pipe side-by-side point and a heating water outlet pipe side-by-side point are respectively located between the first heat exchanger 2 and the first control valve 9 on the corresponding pipeline, and the heating water inlet pipe and the heating water outlet pipe are both connected to a heating user 11 and are both provided with second control valves 10. That is, the hot water/steam produced by the first heat exchanger 2 can be partially used for heating, for example, the hot water/steam is sent to a heating user 11 in a factory or a heating user 11 in a nearby living area; or, the heating medium water backwater and the heating backwater of the lithium bromide unit 7 are switched to enter the first heat exchanger 2, specifically: the first control valve 9 is cut off, the second control valve 10 is opened, and heating return water can enter the first heat exchanger 2 for heat exchange; and cutting off the second control valve 10, opening the first control valve 9, and enabling the return water of the heating medium water to enter the first heat exchanger 2 for heat exchange.
the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an adopt air feed system of hot-blast dehumidification of blast furnace air-blower, includes the air-blower of being connected through hot-blast main and hot-blast furnace, arranges the dehumidifier on air-blower air suction pipe and through the cold water pipeline with the hot water type lithium bromide unit that the dehumidifier is connected, its characterized in that: the hot air pipeline is provided with a first heat exchanger, a cold medium outlet of the first heat exchanger is communicated with a hot medium water inlet pipe of the hot water type lithium bromide unit, and a cold medium inlet of the first heat exchanger is communicated with a hot medium water outlet pipe of the hot water type lithium bromide unit.
2. The air supply system for hot air dehumidification by a blast furnace blower according to claim 1, wherein: and the heat medium water inlet pipe and the heat medium water outlet pipe are respectively provided with a first control valve.
3. The air supply system for hot air dehumidification by a blast furnace blower according to claim 2, wherein: the heating water system comprises a heating water inlet pipe, a heating water outlet pipe, a heating water return pipe, a first heat exchanger, a second heat exchanger, a first control valve, a second control valve and a heating water inlet pipe, wherein the heating water inlet pipe is connected to the heating water inlet pipe, the heating water return pipe is connected to the heating water outlet pipe, the heating water inlet pipe is connected to the heating water outlet pipe, and the.
4. The air supply system for hot air dehumidification by a blast furnace blower according to any one of claims 1 to 3, wherein: and a second heat exchanger is also arranged on the hot air pipeline, the second heat exchanger is positioned between the first heat exchanger and the hot air furnace, and the second heat exchanger is connected with a cooling medium pipeline.
5. The air supply system for hot air dehumidification by a blast furnace blower according to claim 1, wherein: and an air filter is arranged on the air inlet side of the dehumidifier.
6. The air supply system for hot air dehumidification by a blast furnace blower according to claim 1, wherein: the hot water type lithium bromide unit is provided with a cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271933.2U CN209759487U (en) | 2019-03-04 | 2019-03-04 | Air supply system adopting blast furnace blower for hot air dehumidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271933.2U CN209759487U (en) | 2019-03-04 | 2019-03-04 | Air supply system adopting blast furnace blower for hot air dehumidification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209759487U true CN209759487U (en) | 2019-12-10 |
Family
ID=68753465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920271933.2U Active CN209759487U (en) | 2019-03-04 | 2019-03-04 | Air supply system adopting blast furnace blower for hot air dehumidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209759487U (en) |
-
2019
- 2019-03-04 CN CN201920271933.2U patent/CN209759487U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100547321C (en) | Solar-gas engine heat pump heating device and method of operating thereof | |
| CN108317767B (en) | Proton exchange membrane fuel cell waste heat utilization system and method | |
| CN109959042A (en) | A kind of Combined heating system of fume afterheat driving | |
| CN201606865U (en) | Hydrophily type boiler smoke removal afterheat recycling device | |
| CN111503706A (en) | Central heating system | |
| CN205316352U (en) | RTO system with tail gas waste heat recovery function | |
| CN103335445A (en) | System and method for utilizing gas-driven compressor waste heat | |
| CN202476421U (en) | Double heat source drying device applied to tobacco flue-curing | |
| WO2020177302A1 (en) | Method for utilizing cold-air heat of blast furnace axial flow blower, and hot blast stove system | |
| CN103836609B (en) | A kind of emission-reducing system of boiler of power plant exhaust gas dust | |
| CN108826744A (en) | The system for carrying out cool and thermal power multiple-supplying with supercritical water oxidation system complementary energy | |
| CN209759487U (en) | Air supply system adopting blast furnace blower for hot air dehumidification | |
| CN205243745U (en) | Natural gas distributed energy system of coupling solar energy | |
| CN201637195U (en) | Heat and cold multi-generation system based on solar medium and high temperature utilization | |
| CN209759486U (en) | Self-heating and dehumidifying blast furnace blower unit | |
| CN100458290C (en) | Apparatus for refrigeration or pyrogenicity or sanitary hot water using generator exhaust or residual heat | |
| CN211823547U (en) | Rubber drying device based on light-gathering solar energy | |
| CN210624683U (en) | Split type solar energy optothermal coupling gas heating system | |
| CN110017694B (en) | Kiln waste heat cascade utilization device and method | |
| CN209926342U (en) | Hot air utilization system of blast furnace blower | |
| CN209229755U (en) | A kind of coal mine gas one-way flow concentration self-adapting oxidation unit | |
| CN210068575U (en) | Blast furnace pneumatic blower unit | |
| RU2793306C1 (en) | Method of use of heat of cold air from axial blower of blast furnace and system of air heaters | |
| CN205690506U (en) | Wall-hung boiler | |
| CN110849013B (en) | Reheating system of MW-level transcritical carbon dioxide cold-hot combined supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |